To whom it may concern,

I am writing to inform you of the contributions educator Michael Hathorn (Hartford High School) has made over the course of more than a decade to enable students and educators around the world a better understanding of architecture, design, engineering concepts, and 3D modeling in general.

As Michael is working to add a technical vocational license to his teaching portfolio, I’d like to provide some examples of his expertise, his work outside of the classroom, and his character. I became aware of Michael’s work in the classroom using a software application called Google SketchUp back in 2008. I was the SketchUp for Education Manager at Google at that time, and we made contact to find out more about how Michael was implementing it in the classroom. What a great decision that was! He was the most helpful, kind, and capable K-12 educator I’d had contact with, and the connection enabled us to help one another in many ways. There are so many stories I could share about witnessing Mike’s truly admirable way of engaging students, but suffice to say that he became the #1 K-12 person in the U.S. we counted on to help support our education and outreach efforts across the country. Educators' voices have always been important to us, and Mike is such a good role model and cultural fit with our extended team, we were thrilled he was willing to spend time outside of the classroom to help us.

Some examples of Michael Hathorn’s work with us at Google and Trimble (where SketchUp was acquired in 2012) are stated below:

● 2010 - Preparing and presenting at Geo Teachers Institute for Google SketchUp, Google Headquarters, Mountain View, California

● 2011 - Preparing and teaching for Google SketchUp at a Stratford High School, Charleston, South Carolina

● 2011 - Highlighted in SketchUp’s promotional video, SketchUp in the Classroom ● 2012 - Preparing and presenting at Geo Teachers Institute for Google SketchUp, Lewiston, Maine ● 2014 - Booth expo preparing and presenting for Trimble SketchUp at the USA Science & Engineering Festival, Washington DC

● 2016 - Booth expo preparing and presenting for Trimble SketchUp at the USA Science & Engineering Festival, Washington DC

● 2016 - Preparing and presenting at the SketchUp 3D Basecamp, Steamboat Springs, Colorado ● 2016 - Highlighted in Trimble SketchUp promotional video, Can you do that in SketchUp? ● 2017 - Booth expo preparing and presenting for Trimble SketchUp at ISTE 2017 Conference, San Antonio, Texas

● 2017 - Chosen as the first 2D scale figure, and first educator, in SketchUp for Schools startup window

● 2017-2018 - Created step-by-step multi-level online lessons for Trimble’s new SketchUp for Schools K-12 product offering

● 2009-2021 - Continued teaching of architecture and engineering through the use of SketchUp within classes of 3D modeling, 3D printing, Digital Research and Design, Intro to Engineering, as well as Technology, Design and Innovation

Please feel free to reach out to me with any questions.

Sincerely,

Allyson McDuffie

Director, Education & Outreach Trimble

allyson_mcduffie@trimble.com

720-309-1992

From the time I was a junior in high school in 1990 until now, I have spent the last 31 years and tens of thousands of hours working in and around the field of architecture, engineering, manufacturing, surveying, sales, service and maintenance. These experiences have helped me to become one of the top CAD teachers using SketchUp in the world. All of my work experience and teaching follows the basic tenements of the engineering design process where I am constantly thinking of how to solve a current problem and through trial and error have created many learning opportunities for those in my school, community and around the world. Through my work surveying, our business had to learn to solve problems dealing with environmental areas, setting boundaries, locating easements, locating utilities, maximizing land use, designing roads and septic system locations, etc. My work through golf had me primarily in the workshop, repairing, custom fitting, maintaining golf clubs to work properly to the customer’s specifications, as well as, the buying and selling of the retail items for the store and club I worked for. I also became a specialist in using high speed video and doppler radar data to properly fit customers. These technologies were new to the golf industry in the late 90s and I was an early adapter of using the science to understand golf club performance. This is now common place in the golf industry. Once I became a teacher in 1997 I became more and more interested in how to apply those basic work principles to my classroom. And by 2010 I had rewritten Hartford High Schools course offering to include CAD, engineering and research design courses. Through these courses I became known by SketchUp and they reached out to me to do freelance work on an annual basis. This work involved the training, planning, teaching, designing of SketchUp lessons to be used by teachers around the world. The most recent large scale project I completed for SketchUp was creating design application lessons to train teachers and students how to use their new online web based version of SketchUp called SketchUp for Schools. My first four lessons took about 2 years to create in collaboration with Allyson McDuffie, Chris Brasher, Joy Tennenbaum and Mike Harmon. My role was to create the models in SketchUp and step by step technical directions breaking every move down to the most simple keystroke or mouse click. Once these models with designs were complete I worked with Mike Harmon who made the video tutorials based on my designs to make fun interactive easy to follow lessons that have been used by millions of students around the world. I have included a letter from Allyson McDuffie whoisthedirectorofeducationandoutreachforTrimble,theownerofthe CAD software SketchUp. This letter highlights the work I have done for Google and then when Trimble bought SketchUp from Google, how I continued to work with them to increase the accessibility of SketchUp within education.

Golf Club service, repair and club fitting

1993-1996 Worked as a golf club service and repair engineer and club fitter for Golf Day in West Lebanon, NH a Trend-Lines Inc. store

1996-2000 Worked for Hanover Country Club as a clubhouse assistant with primary roles in retail sales, club fitting, service, repair and maintenance engineer of golf clubs and tournament management.

Training teachers/students in technical CAD and Robotics

2009 Started a new innovative history course called Creating the History of Hartford which had students creating 3D models in SketchUp and then uploading those models to Google Earth

2009-2012 Creating a History of Hartford students successful uploaded 190 historic buildings to the 3D layer within Google Earth

2013 Dynamic Landscape presenter-teaching other teachers how to include 3D modeling in their classrooms

2014 VT Fest presenter-teaching other teachers how to 3D print using the newest consumer grade 3D printers and easy to use CAD software.

2015 Skills USA additive manufacturing and demonstration judge

2015 Innovation Lounge Maker Vermont Fest-showcasing the work of my students in CAD and 3D printing as a highlighted table in the VT fest maker lounge

2015 Aiken K-12 Maker Faire and Engineering Challenge team leader 2015 VEX Robotics team leader

2016 Aiken K-12 Maker Faire and Engineering Challenge team leader 2016 Founded 3D Vermont-trained teachers around the state to have their students create digital and printed 3D models to represent their town’s historical buildings.

2016 VEX Robotics team leader

2016-2019 VTC Bridge building competition lead advisor for Hartford High School

2020-present Recreating all lessons in CAD, design and engineering to be asynchronously learned by students in person and online.